Lesson 3 Sampling Distributions Unit 2:Normal Probability Distributions 1Which of the following statistics contain three unbiased estimators?
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2When fidning statistcal measures of sampling distributions, some measurs are biased. Which of the following repersents a biased statistical measure?
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3Determine which of the following show three Biased estimators.
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D
4You flip a coin 8 times and record and the results using 0 for heads and 1 for tails. You find the variance. Is investigating this sample variance the same as investigating the sampling distribution of the variance?
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5During a weekend music festival, surveys are taken from a sample size of 40 people on their age. The sample proportion of people in their 40s compared to everyone is found. What is the distribution of the sample proportion?
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6The sampling distribution of certain statistical measures shows a normal distribution. Which of the following is an unbiased estimator that has a graph that is normally distributed and is not skewed?
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D
7) 450 people are randomly selected at grocery stores across the state and surveyed on the amount of money they are spending at the store that day. How does finding the sample variance compare to investigating the sample distribution of variance?
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8 Samples of sizes n=20
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9 Samples of size n=1500
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10 Certain statistics measures are unbaised. Which of the following show three unbiased estimators?
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B
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D